Curved magnetic filters are often used for the removal of macroparticles from cathodic arc plasmas. This study addresses the need to further reduce losses and improving plasma throughput. The central figure of merit is the system coefficient, κ , defined as filtered ion current normalized by the plasma-producing arc current. The coefficient κ is investigated as a function of continuous and puls...

This paper describes experimental results about the behaviour of arc jets transversely blown in the presence of outgassing polymers (POM –CH2O– or PMMA –C5H8O2–). The arc jets are ignited in air between copper electrodes under a 2 kA, 50 Hz AC current. High speed photography and optical emission spectroscopy are used to study the mechanism leading to the increase of the arc voltage when polymer...

Generation of atmospheric arc plasma with some chemical activity is performed a transferred type dc discharge. A commercially available welding torch used argon steam mixture as operation gas. As mol percentage increases in the mixture, input power to and generated appearance clearly changes. Spectroscopy analysis shows that complete dissociation additional leads increment H O radicals plasma.

Novel three-dimensional AlN microroses, for the first time, have been synthesized via direct reaction between Al and N(2) in arc plasma without any catalyst and template.

Gas tungsten arc welding (GTAW), also known as tungsten inert gas (TIG) welding, is an arc welding process that uses a nonconsumable tungsten electrode to produce the weld. The weld area is protected from atmospheric contamination by a shielding gas (usually an inert gas such as argon), and a filler metal is normally used, though some welds, known as autogenous welds, do not require it. A const...